"Of course, Background Music isn't straight cool jazz. Gregorio: "I've been trying to combine that sound"—THE sound—"with new musical concepts, not ones from the '40s and '50s." Here instead we find a sort of intersection of certain materials from low-dynamic modern jazz with the methods and certain other materials from European improvised music. Unimagined hybrids of Richie Kamuca and Evan Parker, Shelly Manne and Paul Lovens, Jimmy Giuffre and Floros Floridos. Spontaneous cool, curdling with instant heat. A new, West Coast free improvisation."-John Corbett